ELEMENTAL ANALYSIS OF ANCIENT CHINESE BRONZE ARTIFACTS WITH EXTERNAL-BEAM PIXE

1992 ◽  
Vol 02 (03) ◽  
pp. 269-284 ◽  
Author(s):  
E.K. Lin ◽  
Y.C. Yu ◽  
C.W. Wang ◽  
C.T. Shen ◽  
Y.M. Huang ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Elemental Analysis ◽  
Analytical Method ◽  
Hpge Detector ◽  
External Beam ◽  
X Ray

External-beam PIXE has been applied for the determination of the elemental composition of ancient Chinese bronze artifacts. Characteristic x-ray spectra from the samples bombarded with protons of 3 MeV have been measured with a HPGe detector. At each sample three spots were irradiated per run. Results of measurements on three fragments of bronze drinking vessels and helmet of Chinese ancient Chou and Shang dynasties (17th-8th century B.C.) are presented. To check the analytical method, we have also made measurements on the elemental composition of some modern coins. The results are discussed.

scholarly journals Radionuclide x-ray fluorescence analysis of selected elements in agrimony tea samples with preconcentration

2013 ◽  
Vol 60 (2) ◽  
pp. 29-36
Author(s):  
Mikušová V. ◽  
Lukačovičová O. ◽  
Havránek E.
Keyword(s):  
Elemental Analysis ◽  
Analytical Method ◽  
Fluorescence Analysis ◽  
Low Energy ◽  
X Ray ◽  
Nitrocellulose Filter ◽  
Nuclear Analytical Method ◽  
Energy Gamma ◽  
Solid Form

Abstract The contents of selected elements (Mn, Fe, Co, Ni, Cu, Zn, Hg and Pb) in samples of loose tea of agrimony “Repikovy čaj” (Agrimonia eupatoria L.) were studied in this work. Identification and determination of the selected elements content were performed using X-ray fluorescence spectrometry - the nuclear analytical method based on the interaction between low-energy gamma and X radiation and analysed substance. Solid form samples were pressed in tablets and directly analysed. Prepared infusions were analysed after the preconcentration of the elements using precipitation with thioacetamide and ammonium diethyldithiocarbamate with subsequent filtration of created precipitates through a nitrocellulose filter. Detection limits obtained from both methods were compared and their suitability for elemental analysis of plant preparations was discussed.

scholarly journals ELEMENTAL ANALYSIS OF AEROSOL SAMPLES USING PIXE TECHNIQUE

2021 ◽  
Vol 9 (5) ◽  
pp. 175-180
Author(s):  
Deepali Modi
Keyword(s):  
Trace Elements ◽  
Data Analysis ◽  
Proton Beam ◽  
Elemental Analysis ◽  
Hpge Detector ◽  
Low Energy ◽  
X Rays ◽  
X Ray ◽  
Minor Elements

In this work a complex study of the capabilities Particle Induced X-Ray emission(PIXE) technique for the determination of minor constituents of aerosol samples has been done.The PIXE experiments were carried out at Cyclotron at Department of Physics, Panjab University Chandigarh using ~2.7MeV proton beam. The X-rays were detected with the help of low energy HPGE detector. Total fifteen samples were collected from various locations in Chandigarh.The minor elements identified in the aerosol samples wereS,Cl,K,Ca,Ti,Cr,Mn,Fe,Ni,Zn,V,Br and Pb. The data analysis was done using GUPIX software to extract the quantity of the trace elements.

scholarly journals DETERMINATION OF TYPE AND MARK OF PROJECTILES BY METHOD OF X-RAY FLUORESCENCE SPECTRAL ANALYSIS IN THE STUDY OF PNEUMATICALLY SHOT INJURIOUS TO SOME CLOTHING MATERIALS

2016 ◽  
Vol 16 ◽  
pp. 391-398
Author(s):  
I. M. Kozachenko
Keyword(s):  
Spectral Analysis ◽  
Small Group ◽  
Elemental Composition ◽  
Medical Examination ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Foreign Production ◽  
Quantitative Analyses

The X-ray fluorescence spectral qualitative and quantitative analyses were performed for the elemental composition of 4 marks of bullets for pneumatic weapon of home and foreign production, and also for imitators of common clothing materials camouflage fabric and cotton knitwear. It is determined that lead bullets for pneumatic weapons are capable to introduce some elements of their composition, which are inherent in one or another mark of bullets, to the area of damage on certain clothing materials, in particular, camouflage fabric and cotton knitwear. This expands the possibilities of forensic medical examination when dealing with a problem of determining the type and mark of a bullet or of a small group of bullets similar in their elemental composition, due to which the pneumatical shot injuries of examined objects took place.

Energy Dispersive X-Ray Spectrometry of Gold-Silver-Copper Standards for Comparison with Historic Gold Objects

1990 ◽  
Vol 185 ◽  
Author(s):  
S.M. White ◽  
R.J. Koestler ◽  
C. Blair ◽  
N. Indictor
Keyword(s):  
Elemental Composition ◽  
Ternary Mixtures ◽  
Energy Dispersive ◽  
X Ray ◽  
Silver Copper ◽  
Gold Silver

AbstractSeven ternary mixtures of gold(80-95%)-silver(4-15%)-copper(1-15%) were prepared as standards for the determination of elemental composition by energy dispersive X-ray spectrometry (EDS). Two geometric forms (flat and oblate) of the standards were prepared for comparison to the analyses of historic gold objects. Surface analyses were performed. Polished sections of the standards were also analysed Comparison between two methods for collecting EDS data is reported. The analyses are discussed in terms of developing a generalized methodology for estimating elemental composition of museum artifacts.

Spatial and vertical determination of chosen potentially toxic metals and soil properties on a former sewage farm near Berlin

2021 ◽  
Author(s):  
Magdalena Sut-Lohmann ◽  
Shaghayegh Ramezany ◽  
Friederike Klos ◽  
Thomas Raab
Keyword(s):  
Metal Concentration ◽  
Elemental Analysis ◽  
Agricultural Land ◽  
Atomic Emission ◽  
Concentration Increase ◽  
Potentially Toxic Metals ◽  
R Software ◽  
X Ray ◽  
Sewage Farm

<p>In the past 150 years, sewage disposal onto agricultural land was a common practice around the world that resulted in accumulation of organic matter, salts, nutrients and heavy metals in the soils and the subsequent percolation into the groundwater. We present a study conducted on a former sewage farm in Germany, state of Brandenburg, were wastewater coming from Berlin was used for more than one century to irrigate the surrounding fields. In the area of a sewage sedimentation basin, 110 soil samples at the depth of 15-20 cm (waste layer) and 4 boreholes (10 samples up to 100 cm depth) were collected in order to determine pH, LOI and concentration of chosen metals. For the elemental analysis, two methods: X-ray fluorescence (XRF) and Atomic Emission Spectroscopy (MP-AES) were used. The analysis confirmed the presence of relatively homogenous sewage waste layer at the 20 cm depth, characterized by slightly acidic to neutral pH (6.3-7.5), high OM accumulation (up to 49%) and elevated concentrations of potentially toxic chosen metals (Cu, Ni, Pb, Cr and Zn). The correlation analysis performed by R software revealed strong between metal distribution and OM content. The XRF elemental analysis performed prior and after LOI, revealed metal concentration increase in mineral samples (up to 50% of the original value). An empirical correlation using a linear regression was found between OM content loss and metal concentration increase. Comparison of the AES and XRF elemental analysis of the mineral samples revealed significantly higher results for the X-ray fluorescence method, except for Cr. A correction factor, based on OM reduction, applied to the values, resulted in better correlation of XRF and AES results, questioning feasibility of this method for samples highly affected by sewage influence.</p>

A green analytical method for the determination of Cu, Fe, Mn, and Zn in wheat flour using total reflection X-ray fluorescence

2018 ◽  
Vol 33 (7) ◽  
pp. 1264-1268 ◽  
Author(s):  
Ignacio Machado ◽  
Sebastián Mondutey ◽  
Natalia Pastorino ◽  
Valeria Arce ◽  
Mariela Pistón
Keyword(s):  
Sample Preparation ◽  
Wheat Flour ◽  
Analytical Method ◽  
Environmentally Friendly ◽  
Total Reflection ◽  
X Ray ◽  
Subsequent Determination ◽  
Environmentally Friendly Method

A simple, fast and environmentally friendly method for sample preparation and subsequent determination of minerals in wheat flour using TXRF.

Automatic Data Acquisition and Reduction for Elemental Analysis of Aerosol Samples

1973 ◽  
Vol 17 ◽  
pp. 560-570 ◽  
Author(s):  
J. F. Harrison ◽  
R. A. Eldred
Keyword(s):  
Energy Spectrum ◽  
Data Collection ◽  
Data Acquisition ◽  
Elemental Composition ◽  
Elemental Analysis ◽  
Correlation Technique ◽  
Control Data ◽  
Automatic Data ◽  
X Ray ◽  
Automatic Data Acquisition

AbstractA PDF 15/40 computer wich ADC and CAMAC interfaces is used to control data collection apparatus, acquire data, and reduce data to determine the elemental composition of aerosol samples. The background is subtracted from each energy spectrum, peak centers are located automatically using a Gaussian correlation technique, peak multiplets are resolved with Gaussian fits, peak energies are compared with entries in a table of x-ray lines for possible identification, multiple identification of peaks and line interferences are resolved, and the elemental amounts are determined from the areas of the Gaussian fits.

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